I have a question about Accoustic Cooling. I know that most Aerosol Cans under Pressure of a low boiling point Fluid will get very cold when shaken vigorously. Has there ever been an experiment were a Super Conductor was impregnated with micro bubbles of a Cooling Liquid, where when the Super Conducting Material was Vibrated with an Accoustic Piezo sound vibration that the Super Conductive Material would become cold enough to activate its Temperature dependancy. Would little Gas pockets of Liquid Helium or Liquid Nitrogen work? The Super Conductive Material would look something like how Pumice looks like internally, Thousands of little Gas Pockets. A Material that gets very cold when vibrated.